Scaffolding.



No. 867,274; PATENTBD 00T. 1, 1907;

A G.'B.HUMPHRIES.

7 SGAPFOLDING.

AAPPLICATION FILED FEB.'26, 1907.

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GEORGE EDWARD HUMPHRIES, OFWELLINGTON, NEW ZEALAND.

SGAFFOLDING.

Specification of Letters latent.

PatentedOct. 1` 1907.

Applieatou'iiled February 26, 1907. Serial No. 359,517.

To all whom it may concern:

Be it known that I, vGEORGE EDWARD HUMPHRIES, a subject of His Majesty' the King or' Great Britain and Ireland, residing at No. 61 Adelaide road, Wellington,

in the Provincial District of Wellington, in the Colony of New Zealand, have invented certain new and useful Improvements in Scaffolding, oi which the following is a specification.

My invention relates to improvements in scaffolding, and it consists in the constructions, combinations and arrangements herein described and claimed.

The object of my invention is to provide an improved scaolding, especially adapted to brick, or masonry, walls, which can be convenientlyattached in position to provide a secureand safe support for the workmen.

In the accompanying drawings, forming a part oi this application, and in which similar reference symbols indicate `corresponding parts in the several views-Figure 1 is a perspective view, illustrating one embodiment oi my invention; Fig. 2 is an end view, on a larger. scale, of the-construction shown in Fig. l Fig. 3 is a plan view of one ofthe brackets and -its supporting eye; a portion of the wall engaged by said hook being shown; Fig. 4 is 'a top perspective view of one oi the supporting eyes;

Fig. 5 is a perspective'view, showing a portion'of a brick Wall with a modified form of supporting eye secured thereto; Fig. 6 is a detail front elevation, on a'larfger scale, of the slidable adjustable bracket shown in Fig. 2; Fig. ,7 is a detail perspective view, on a larger scale, showing the top oi the side post illustrated in Fig. 2; Fig. 8 illustrates aumodiiied construction for securing the supporting eye to a post, or upright; Fig. 9 isa plan view o the part shown in Fig. 8; Fi'g10 is a perspective view ofthe supporting eye shown in Fig. 8; Fig. 1l is a perspective view of the .clamping bracket shown in Fig. 1. Fig. 12 is a detail side elevation, on a larger scale,

clearly showing the supporting joint between the strut and the side post; and Fig. 13 is a sectional view on the line 13-13 of Fig. 12.

Referring especially to Figs. 1, 2, 3, 4, 6, 7 and -11 4 4indicates a supporting eye provided with a l1ook 1 Y adapted to be inserted between the bricks oi a masonry Wall; said hook'being preferably formed with a lug 3 on f its lower face an'd with an upwardly extending point 2.

The aperture 5 of the supporting eye is shaped'to tai per outwardly irom the wall, for receiving a correspondingly. tapered hook 6 of a side bracket; thereby enabling the hook 6 to be `firmly wedged in place by driving it outward the tapered aperture. i

The bracket is shown comprising a ioor support 7 having an Iinclined strut 9 secured thereto with its inner end positioned for engaging the masonry Wall'll; a brace 8 connecting said support 7 and strut 9. The outer end ,O the `strut 9 extends upwardly, and is provided with a notch 26 in itsupper end for receiving a bolt 27 passing through a side post 23; said'bolt being provided with a thumb nut 28 for tightening it in position. The lower end ofthe side post 23 is provided with a notch 24 adapted to receive a bolt 25 passing through the upwardly-extending portion of the strut 9. By this means,

. the side post can be conveniently attached securely in position by sliding it down-ward on the upward extenf sion to bring the notches 24 and 26 into engagement with the corresponding boltsA 25 and 27 ,andthen tightening the thumb nut 28. A A's shown especially in Figs. Zand 6, an adjustable bracket 38 is slidably supported on the side post, and

provided with a tapered opening for receiving and seating a wedge 39 against the sidepost to lock the bracket in any oi its adjusted positions. The upper end'of said wedge is offset at 40 toprovide a seat for the outer end oi the supporting rod 36; the inner end of said rod being provided with a lange12 for securing it inthe masonry wall. i

' Intermediate oi the oor supports 7,/a bar 10 is secured to the masonry wall in a man-ner similar tothe bar 36; the outer end of said bar 10 extending througha yoke at the lower end of a bracket 13. The upper end oisaid bracket is provided witha hook for engagement over a guard board 1 4, which latter extends between andis supported on'the side brackets. A tapered cotter 15 is mounted in the yoke of the bracket 13 for wedg- `ing the bar 10 rmly in said yoke, and a screw 15a is threaded through the upper portionof the'bracket 13 for engaging the top of the board 15 to clamp therod 10 against said board. l

A chain 31 is secured near the upper end of each side post andadapted to be latched in a slot 30 formed in the top ofsaid post for securing'a hand rail 32 to the latter. The chain 31 can be securely latched by passing a pin through an` eye 29 formed at the'top of the side post and through the link of the chain extending through the slot 30 into said eye. It will be obvious that instead oi employing the hand rail 32, a hand rope could be secured to the eyes 29 at the top of the side posts.l

I have shown in Fig. 1 an'inteimediate supporting rod 33 secured to the masonry .wall in a manner simi' lar to the rod 36, and secured to the hand rail 32 by a link 34.

\ Frornthe above description, it will be seen .that the locking the adjustable brackets 38.

Fig. 5 illustrates a slightly inodiedrmeans for securing the supporting eye `tp the masonry wall. kIn this construction, vthe tapered supporting eye 16 is provided with an annular ange for engaging the outer face of the wall and with a shank 17 adapted to extend through said wall andthrough an opening in an anchor plate 19 on the inner'face of said wall. The shank 17 is provided lwith a series of openings 21 adapted to receive a key 20 which will engage the anchor plate to lock the shankl rrnlyin position. The lower end of the anchor plate is providedwith' a series oi openings 51 adapted to receive a pin 52 which canbe driven between the courses oi the. brick wall; thereby tying downsaid plate to securely prevent upward tilting of the inner shank 17.

Figs. 8, 9 and 10 illustratea modied construction for securing the supporting eye toa-11 upright. In this construction,' a clamping bar 44 is provided with an .offset lower portion for engaging the upright, and with a threaded opening in its upper endior receiving vthe threaded .shank 43 of thesupporting eye 42. An

intermediate cross-piece or'the bar 44 has a chain 47 secured at one end 46 thereto; said cross-piece being provided 'at its other end with a hook 49 to which the .Chain is latched after beingpassed around the upright.

' In this construction, the bar 44 is placed in position factoryconstruetions, but, obviously, changes couldbe -made Within the spirit and scope of vmy invention.

`Withv its offset 45 and the threaded shank 43 engaging the upright, and the chain then secured about the up- 'right for supporting the bar in position. The threaded 'shankf43 is then screwed throughthe vclamping bar 44 against' the upright until sufficient pressure is exerted thereby to securely lock the parts in position.

Figs. 5, 8, .9,and 10 illustrate merely two modified means for securing the supporting.. eyes in position;`

' saidl eyes1 being'then employed torsupporting the plat- V similar to that described in i forms in a manner exactly reference to Figs; l1 and 2.

I have illustrated and described preferred and satis- Having thus described my invention, what I claim as new -therein and desire to secure by Letters Patent isw- 1. hi scattolding, the combination of supporting eyes provided with outwardly tapered apertures, means for securing said eyes to a support, brackets provided with tapered 4hooks for engaging said apertures, and downwardly inclined struts on said brackets for abutting against seid support, substantially as described.

2. In scaffolding, the combination of supporting eyes, )means fop securing said eyes to a support, brackets adapted to eigage said eyes and to abut against said support, upward extensions on said bracket provided with notches at their tops, bolts extending through the lower portions 'of said upward support, side posts provided with notches in their lower ends for engaging said bolts, bolts extending through said side posts in position te engage the notches in said upward extension, and'means for tlghtening said bolts for clamping said side posts in position on said upward extensions, substantially as described.

' 8. In scaffolding, the combination of supporting eyes, means for securing said eyesto a support, brackets adapted to engage said eyes and to abut against said support, upward extensions on said bracket, side posts detachably secured to said upward extensions, eyes formed at the upper ends of said side posts and provided with slots 'extending through the walls thereof, chains secured to said side posts'and adaptedto be latched in said slots, and a side rail supported on said chains, substantially as described. i

4. in scaiolding, the combination of brackets, means for securing them to a support, a guardboard extending be tween and resting on said brackets, a rod secured to said support and extending beneath said guard board, a bracket hooked over said guard boa rd and provided with a yoke for receivingsaid rod, a tapered key in said yoke for wedgini,r said rodin the latter, and a screw threaded in the upper portion of said bracket for engagement with said guard board for clamping together said guard board and rod, substantially as described.A

Witnesses:

.T. J. WATSON, H. J'. Pinon. 

